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Finding the Fourth Proportional to 500,718.31, 751,078.01 and 126,741.31

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Solution

The fourth proportional to 500,718.31, 751,078.01 and 126,741.31 is: 190,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,718.31 : 751,078.01 = 126,741.31 : x
  2. Step 2: Convert to fraction form
    500,718.31/751,078.01 = 126,741.31/x
  3. Step 3: Cross multiply
    500,718.31x = 751,078.01 × 126,741.31
  4. Step 4: Simplify right side
    500,718.31x = 95,192,610,899.59
  5. Step 5: Solve for x
    x = 95,192,610,899.59/500,718.31
  6. Step 6: Final answer
    x = 190,112.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.